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一、机床功能设定
1、G53—选择 机床坐标系
格式:G53 XYZ;(X Y Z 为机床坐标值)
注:当指定 G53 指令时,就清除刀具的半径补偿、刀具长度补偿和刀具偏值,一般在换刀是
指定 Z 轴。
2、G54~G59—选择 工件坐标系
注:电源接通并返回参考点后,系统自动选择G54。
3、G54.1 P1~P48—选择附加工件坐标系
4、G52—局部坐标系
格式:G52XYZ;
格式含义:为了编程的方便设定工件坐标系的子坐标系,G52 中的 X Y Z 的值是工件坐标
系 G54~G59 中的位置坐标。
取消局部坐标系——G52 X 0 Y 0 Z 0 ;
3 / 7
. . . .
注:当指令 G52 局部坐标系或取消局部坐标系时就取消了刀具长度补偿、刀具半径补偿
等刀具偏值,在后续的程序中必须重新设置指定刀具长度补偿、刀具半径补偿等刀具偏值。
5、G90—绝对编程
绝对编程是刀具移动到距离工件坐标系原点的某一位置。
6、G91—增量编程
增量编程刀具移动的距离是以前一点为基准计算,是前一点的增量。
7、G21—毫米输入 G20—英寸输入
8、G16—启用极坐标指令 G15—取消极坐标指令